材料设计的微小改变可以大幅减少环境影响。

The future of democracy depends on its ability to adapt to new challenges and to renew itself.

The passion for office among members of Congress is very great, if not absolutely disreputable.

修道就是修心，修心就是修道。

我被告知进步的道路既不是快速的，也不是容易的。